class Card:
    # 初始化方法
    def __init__(self,username,cardNo,createTime,money,rId):
        self.username = username
        self.cardNo = cardNo
        self.createTime = createTime
        self.money = money
        self.rId = rId

    # 打印对象，只能打印地址，只有有str方法才能打印出字符串
    def __str__(self):
        return f'Card({self.username},{self.cardNo},{self.createTime},{self.money},{self.rId})'